Fully Absorbent Fitted Nappies are used mostly as night nappies. One nappy with a cover should last your baby 8-12 hours without changing. Night nappies are more bulky than day nappies because it is designed to go much longer stretches without changing, therefore needs more layers. This fully absorbent fitted nappy is made from high quality locally manufactured unbrushed cotton fleece Outer shell is 3 layers Snake style snap in inserts that are 4 layers of soft cotton fleece *snap in snake inserts make customizable absorption in the wet zone easy 4 layer black cotton fleece booster This nappy is designed for medium wetters and can be boosted if needed. Please take Special Note: The natural cotton has been through much less processing during the manfacturing stage than our dyed cotton which means that they WILL TAKE LONGER TO BECOME FULLY ABSORBENT, but once they are, they will be your MOST ABSORBENT and also stay the softest. To be safe boost in the begining to ensure no leaking or wash frequently with other laundry to assit in reaching maximum absorbency.